21421+3848 ALI 980
21h 42m 04.09s +38° 48' 19.9" P.A. 139.00 sep 8.9 mag 12.94,13.90
| Coord 2000 |
21421+3848 |
|
Discov num |
ALI 980 |
|
Comp |
|
|
Coord arcsec 2000 |
21 42 04.09 +38 48 19.9 |
|
| Date first |
1928 |
|
Date last |
2016 |
|
Obs |
10 |
|
| Pa first |
141 |
|
Pa last |
139.2 |
|
P.A. Now (θ) |
139.2° |
|
| Sep first |
8.9 |
|
Sep last |
8.875 |
|
Sep. Now (ρ) |
8.875" |
|
| Mag pri |
12.94 |
|
Mag sec |
13.90 |
|
delta mag (ΔM) |
0.96 |
|
Spectral class |
|
|
| Pri motion ra |
+004 |
|
Sec motion ra |
+009 |
|
| Pri motion dec |
-022 |
|
Sec motion dec |
-020 |
|
| Notes |
|
|
rPM=0.241 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3184-00048-1 |
|
Gaia DR2 |
1953684175164812032 |
|
